public function setup()
 {
     parent::setup();
     unset($this['is_column'], $this['render_function'], $this['name'], $this['content_list']);
     sfSympalFormToolkit::changeContentSlotTypeWidget($this);
     $this->setupValueField();
 }
 public function doSave($con = null)
 {
     parent::doSave($con);
     /*
      * If this is a column slot, then the value was actually set on the
      * content record, meaning that we need to save that record
      */
     if ($this->getObject()->is_column) {
         $this->getObject()->getContentRenderedFor()->save($con);
     }
 }